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Detection method and device

A detection method and relay technology, applied in the direction of measuring devices, measuring electricity, measuring electrical variables, etc., can solve problems such as failure to detect relay damage

Active Publication Date: 2017-04-19
JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In view of this, the embodiment of the present invention provides a detection method and device to solve the problem in the prior art that the relay cannot be damaged when the relay is damaged

Method used

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Examples

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Embodiment 1

[0076] The embodiment of the present invention provides a detection method, please refer to figure 1 , Which is a schematic flow chart of the method provided by the embodiment of the present invention, such as figure 1 As shown, the method includes the following steps:

[0077] 101. Obtain the current resistance value of the relay.

[0078] Specifically, when the relay is damaged, the resistance value of the relay will be abnormal. Therefore, it is necessary to obtain the current resistance value of the relay to determine whether the relay is abnormal.

[0079] Further, when the relay is working in a high-voltage environment, it will often be impacted by a large current or often in an overload state. At this time, the contacts of the relay will be caused by large current or overload, resulting in unilateral contact. The phenomenon of adhesion, contact ablation, arcing and increased contact resistance.

[0080] For example, when the relay is in a high current environment, due to the hi...

Embodiment 2

[0094] The embodiment of the present invention provides a specific implementation for step 101, specifically as figure 2 As shown, the method includes the following steps:

[0095] 201. Detect the voltage value between the positive pole and the negative pole of the relay.

[0096] 202. Detect the current value of the current passing through the relay.

[0097] 203. Obtain a ratio of the voltage value to the current value as the resistance value.

[0098] Wherein, the current value and the voltage value are the current value and the voltage value at the same time, so as to ensure the accuracy of the obtained resistance value, thereby ensuring the accuracy of the result of determining whether the relay is damaged.

Embodiment 3

[0100] The embodiment of the present invention provides a specific implementation manner for step 201, specifically as image 3 As shown, the method includes the following steps:

[0101] 301. Collect a first voltage signal.

[0102] In a specific embodiment, if the relay works in a battery system, the positive pole of the battery is connected to the positive pole of the relay, and then the wire of the positive pole of the battery, the positive voltage and the current of the battery are derived from the negative pole of the relay, that is, the positive pole of the battery passes through the relay. The negative pole of the relay is connected to the downstream equipment of the relay. Due to the resistance of the relay, the positive voltage of the battery will produce a voltage drop in the relay. The voltage drop is the working voltage of the relay (low voltage) and forms the current through the relay. The current is The operating current of the relay. When the voltage signal collect...

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PUM

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Abstract

The embodiment of the invention provides a detection method and device. The current resistance value of a relay is acquired so that damage of the relay can be judged according to the resistance value. The resistance value of the relay is abnormal when the relay is damaged so that damage of the relay can be judged by detecting the resistance value according to the principle, and the problem that the relay cannot be detected when the relay is damaged in the prior art can be solved.

Description

[0001] 【Technical Field】 [0002] The present invention relates to the technical field of relay detection, in particular to a detection method and device. [0003] 【Background technique】 [0004] At present, relays are widely used in various industries, such as remote control, telemetry, communication, automatic control, mechatronics and power electronic equipment. The working environment of the relay is generally a high-voltage environment. Therefore, it is often impacted by large currents or often in an overload state. At this time, the relay may be damaged. When the relay is damaged, the relay cannot work normally, for example: One side of the contact caused by unilateral adhesion cannot be separated, making the side of the relay in a normally closed state; or, caused by contact ablation, the relay cannot be turned on when the relay is closed, causing the relay to lose its switching function. However, there is no effective means to detect whether the relay is damaged in the prior...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/327
CPCG01R31/3278
Inventor 李延长陈端雄
Owner JIANGSU CONTEMPORARY AMPEREX TECHNOLOGY LIMITED